Time: since adventure update.
Context: i trow decoy or first mate to enemies, dungeon chest or cursed skulls.
Expected: they should do 1hp damage when they hit the enemy or object.
Observed: they dont do any damage, open chest, or activate the cursed skulls.
Repro Steps:
1. select the PC class
2. hold right click, 1 key, or 2 key, aim to a desired object and release the key.
3. Watch as it doesn't any damage.

I used that damage to activate cursed skulls, open dungeon chests in lava, or just gain some energy by triggering PC passive. PC's basic attack can only shoot horizontaly, so sometimes it is helpfull to use that technique to gain some energy.